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Force fluctuations in a pushed granular material

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We analyse the time evolution of stresses in a noncohesive granular bed cut by the motion of a tool. Our numerical simulations both in two and three dimensions reveal large fluctuations of the force acting on the tool. These fluctuations have a decreasing exponential distribution. We find that, in spite of fluctuations, the mean force is well fitted by an analytical form obtained from a limit analysis with Coulomb's failure criterion.

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Received: 7 January 2000

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Nouguier, C., Bohatier, C., Moreau, J. et al. Force fluctuations in a pushed granular material. GM 2, 171–178 (2000).

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